<template>
  <div>
    <bread>
      <span slot="second">商品管理</span>
      <span slot="third">添加列表</span>
    </bread>
    <el-card>
      <!-- 添加商品区域 -->
      <el-alert title="添加商品信息" :closable="false" type="warning" center show-icon></el-alert>
      <el-steps :space="200" :active="activeIndex -0" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <!-- 坐标tab区域 -->
      <el-form
        :model="addForm"
        :rules="addFormrules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          :tab-position="tabPosition"
          v-model="activeIndex"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            基本信息
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_weight">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cascaderProps"
                @change="parentCateChange"
                clearable
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              prop="goods_name"
              v-for="item in manyGoodsData"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="item1"
                  border
                  v-for="(item1,index) in item.attr_vals"
                  :key="index"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item :label="item.attr_name" v-for="item in onlyGoodsData" :key="item.attr_id">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              action="http://timemeetyou.com:8889/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="handleUploadSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="4">
            <quill-editor
              ref="myQuillEditor"
              v-model="addForm.goods_introduce"
              style="min-height:'300px'"
            />
            <el-button type="primary" class="btn" @click="add">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <el-dialog title="图片预览" :visible.sync="prePicdialogVisible" width="60%">
      <img :src="previewPath" />
    </el-dialog>
  </div>
</template>

<script>
import Bread from '../../base/breadcrumb'

export default {
  components: {
    bread: Bread
  },
  data() {
    return {
      prePicdialogVisible: false,
      uploadUrl: 'http://timemeetyou.com:8889/api/private/v1/upload',
      headerObj: { Authorization: window.sessionStorage.getItem('token') },
      activeIndex: '0',
      tabPosition: 'left',
      addForm: {
        goods_name: '',
        goods_price: '',
        goods_number: '',
        goods_weight: '',
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      newaddForm: {
        goods_name: '',
        goods_price: '',
        goods_number: '',
        goods_weight: '',
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      addFormrules: {
        goods_name: [
          { required: true, message: '请输入商品名字', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' }
        ]
      },
      cateList: [],
      cascaderProps: {
        expandTrigger: 'hover',
        value: 'cat_id',
        label: 'cat_name',
        children: 'children'
      },
      manyGoodsData: [],
      onlyGoodsData: [],
      previewPath: ''
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品数据失败')
      }
      this.cateList = res.data
    },
    parentCateChange() {
      console.log(this.addForm.goods_cat)
      const len = this.addForm.goods_cat.length
      if (len !== 3) {
        this.addForm.goods_cat = []
      }
    },
    beforeTabLeave(cur, old) {
      if (this.addForm.goods_cat.length !== 3 && old === '0') {
        this.$message.error('请选选择商品分类')
        return false
      }
    },
    async tabClicked() {
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' }
          }
        )
        console.log(this.cateId)
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数失败')
        }
        res.data.forEach(item => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })
        this.manyGoodsData = res.data
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' }
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取商品属性失败')
        }
        this.onlyGoodsData = res.data
      }
    },
    handlePreview(file) {
      this.previewPath = file.response.data.url
      this.prePicdialogVisible = true
    },
    handleRemove(file) {
      const filePath = file.response.data.tmp_path
      const index = this.addForm.pics.findIndex(c => {
        return c === filePath
      })
      this.addForm.pics.splice(index, 1)
      console.log(this.addForm)
    },
    handleUploadSuccess(response) {
      const picInfo = { pic: response.data.tmp_path }
      this.addForm.pics.push(picInfo)
    },
    add() {
      this.newaddForm = this.addForm
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error('提交失败')
        }
        this.newaddForm.goods_cat = this.newaddForm.goods_cat.join(',')
        this.manyGoodsData.forEach(item => {
          const newInfo = { attr_id: item.attr_id, attr_value: item.attr_vals.join(' ') }
          this.addForm.attrs.push(newInfo)
        })
        this.onlyGoodsData.forEach(item => {
          const newInfo = { attr_id: item.attr_id, attr_value: item.attr_vals }
          this.addForm.attrs.push(newInfo)
        })
        console.log(this.newaddForm)
        const { data: res } = await this.$http.post('goods', this.newaddForm)
        console.log(res)
        if (res.meta.status !== 201) {
          return this.$message.error('添加商品失败')
        }
        this.$message.success('添加商品成功')
        this.$router.push('/goods')
      })
    }
  },
  computed: {
    cateId() {
      const len = this.addForm.goods_cat.length
      if (len === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>

<style lang="less" scoped>
.el-container {
  height: 100%;
}
.el-checkbox {
  margin: 2px 10px !important;
}
.el-input {
  width: 90%;
}
.el-dialog img {
  width: 100%;
}
.btn{
  margin-top: 15px;
}
.ql-editr{
    min-height: 300px!important;
}
</style>
